2021 GMC Terrain Spare Tire
The GMC Terrain isn't equipped with a traditional spare tire. Instead, it is provided with a tire inflator kit to aid with minor tire punctures. This kit includes a portable air compressor and a sealant canister designed to temporarily repair small tire punctures, however, it is not a replacement for larger punctures or serious tire damages. Nonetheless, for those wanting a spare tire, it can be purchased separately or may be included in some specific trims. The size of the spare tire typically depends on the model year of the GMC Terrain, though in most cases a compact temporary spare tire known as a "donut", with a size of T125/70D17 is what's used. Consult your vehicle ' s manual or talk with a tire professional to verify the correct spare tire size for your specific GMC Terrain model.
2021 GMC Terrain comes with 3 OEM tire size options. Select the original equipment the tire size installed on your vehicle to see all spare tires that have roughly the same tire diameter and can be used as a temporary replacement in the event of a flat tire. Remember that load carrying capacity of the spare tire must be the same or higher than the load carrying capacity of the original equipment tires in order to safely support the weight of your vehicle. Refer to vehicle owner's manual or contact GMC dealership to confirm the correct 2021 GMC Terrain spare tire size.
225/60R18
225/60R18 tire has a diameter of 28.6". These temporary spare tires fit the acceptable tire diameter range of 27.7" to 29.5".
| Spare Size | Spare Diameter | Diameter Differential |
|---|---|---|
| T155/85D18from $185.43 | 28.4" | -0.7% |
| T145/80R19from $183.34 | 28.1" | -1.7% |
| T155/80R19from $173.33 | 28.8" | 0.7% |
| T155/90D18from $163.99 | 29" | 1.4% |
| T155/90R18from $134.96 | 29" | 1.4% |
| T165/90R17from $119.99 | 28.7" | 0.3% |
| T155/90D17from $114.99 | 28" | -2.1% |
| T165/90D17from $109.43 | 28.7" | 0.3% |
| T175/90D17 | 29.4" | 2.8% |
| T175/80R18 | 29" | 1.4% |
| T175/80D18 | 29" | 1.4% |
| T165/60R20 | 27.8" | -2.8% |
| T155/90R17 | 28" | -2.1% |
| T155/80R18 | 27.8" | -2.8% |
| T155/80D19 | 28.8" | 0.7% |
| T155/80D18 | 27.8" | -2.8% |
| T145/80R20 | 29.1" | 1.7% |
| T175/90R17 | 29.4" | 2.8% |
225/65R17
225/65R17 tire has a diameter of 28.5". These temporary spare tires fit the acceptable tire diameter range of 27.6" to 29.4".
| Spare Size | Spare Diameter | Diameter Differential |
|---|---|---|
| T155/85D18from $185.43 | 28.4" | -0.4% |
| T145/80R19from $183.34 | 28.1" | -1.4% |
| T155/80R19from $173.33 | 28.8" | 1.1% |
| T155/90D18from $163.99 | 29" | 1.8% |
| T155/90R18from $134.96 | 29" | 1.8% |
| T165/90R17from $119.99 | 28.7" | 0.7% |
| T145/85R18from $118.73 | 27.7" | -2.8% |
| T155/90D17from $114.99 | 28" | -1.8% |
| T165/90D17from $109.43 | 28.7" | 0.7% |
| T175/80D18 | 29" | 1.8% |
| T165/60R20 | 27.8" | -2.5% |
| T155/90R17 | 28" | -1.8% |
| T155/80R18 | 27.8" | -2.5% |
| T155/80D19 | 28.8" | 1.1% |
| T155/80D18 | 27.8" | -2.5% |
| T145/80R20 | 29.1" | 2.1% |
| T175/80R18 | 29" | 1.8% |
235/50R19
235/50R19 tire has a diameter of 28.3". These temporary spare tires fit the acceptable tire diameter range of 27.5" to 29.1".
| Spare Size | Spare Diameter | Diameter Differential |
|---|---|---|
| T155/70R19from $237.96 | 27.6" | -2.5% |
| T155/85D18from $185.43 | 28.4" | 0.4% |
| T145/80R19from $183.34 | 28.1" | -0.7% |
| T155/80R19from $173.33 | 28.8" | 1.8% |
| T155/90D18from $163.99 | 29" | 2.5% |
| T155/90R18from $134.96 | 29" | 2.5% |
| T165/90R17from $119.99 | 28.7" | 1.4% |
| T145/85R18from $118.73 | 27.7" | -2.1% |
| T155/90D17from $114.99 | 28" | -1.1% |
| T165/90D17from $109.43 | 28.7" | 1.4% |
| T155/80D18 | 27.8" | -1.8% |
| T155/80D19 | 28.8" | 1.8% |
| T155/80R18 | 27.8" | -1.8% |
| T155/90R17 | 28" | -1.1% |
| T165/60R20 | 27.8" | -1.8% |
| T175/80D18 | 29" | 2.5% |
| T175/80R18 | 29" | 2.5% |
More GMC Terrain Spare Tires
- 2025 GMC Terrain Spare Tire
- 2024 GMC Terrain Spare Tire
- 2023 GMC Terrain Spare Tire
- 2022 GMC Terrain Spare Tire
- 2020 GMC Terrain Spare Tire
- 2019 GMC Terrain Spare Tire
- 2018 GMC Terrain Spare Tire
- 2017 GMC Terrain Spare Tire
- 2016 GMC Terrain Spare Tire
- 2015 GMC Terrain Spare Tire
- 2014 GMC Terrain Spare Tire
- 2013 GMC Terrain Spare Tire
- 2012 GMC Terrain Spare Tire
- 2011 GMC Terrain Spare Tire
- 2010 GMC Terrain Spare Tire
All listed guides, data and/or calculations are for informational purposes only. Spare-Tires.com does not warrant or make any representations regarding the accuracy of or the results of the use of this information. Always refer to vehicle owner's manual for the correct spare tire size configuration.